Ben Walker joined Brooks in 1995, working part time before graduating from Southampton Institute the following year with a BA (Hons) in Fine Art Valuation. He initially worked in the Automobilia Department, and, as the company was merged with Bonhams in 2000, progressed rapidly to junior cataloguer and then senior administrator with management responsibility for the Collectors' Motorcycle Department in June 2002. In October of that year, Ben was appointed Head of Motorcycles. In 2010 he was appointed Department Director.

Since 2002 Ben has been responsible for re-introducing motorcycle sales to Bonhams motor car auction calendar. He has overseen the sale of many fine collections including the Geeson Brothers Motorcycle Museum (100% of lots sold, first ever 'white glove' sale for Bonhams' Motoring Division, £720,000), the Brian Verrall Collection (100% of lots sold, £1,236,400), the Willy Neutkens Collection of Important BMW Motorcycles (100% of lots sold, Euro 1,038,380).